[lkml]   [2005]   [Feb]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [rfc][patch] ide: fix unneeded LBA48 taskfile registers access
Hello Tejun,

On Thu, 10 Feb 2005 09:01:58 +0900, Tejun Heo <> wrote:
> Hello, Bartlomiej. Happy new lunar year.
> Bartlomiej Zolnierkiewicz wrote:
> >
> > I would prefer to not teach do_rw_taskfile() about ->tf_{in,out}_flags
> > (and convert all users to use helpers) - it is much simpler this way,
> >
> > ->flags field in ide_task_t is needed anyway (32-bit I/O flag).
> >
> New lunar year day is one of the biggest holidays here, so I haven't
> got time to work for a few days. As it's over now, I began to work on
> ide drivers again. I applied your task->flags patch and am moving my
> patches over it.
> One problem is that, with ATA_TFLAG_LBA48, whether to use HOB
> registers or not cannot be determined separately for writing and
> reading. So, when initializing flush tasks, if WIN_FLUSH_CACHE_EXT is
> used, we need to turn on ATA_TFLAG_LBA48 to read error location
> properly, and we end up unnecessarily writing HOB registers.

Yep, good catch.

> I think we can...
> 1. Just leave it as it is. It's not that big a deal.
> 2. Use another flag(s) to control LBA48 reading/writing separately.
> 3. do my proposal. :-)
> I'm currently sticking to #1. Please let me know what you think.

agreed, #1 is a good choice, it is not that important to make things
more complicated

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:10    [W:0.049 / U:2.028 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site